Here's the battery thermistor resistance curve from a 2013 model Leaf.

I'm not familiar with the Tesla DC-DC converters, but it might fit with this Molex connector:
https://www.digikey.com/product-detail/ ... ND/1756779

Regarding the SOC there are two 'locations' that this value is available. On is 'static' and used on startup and probably a copy of the last known 'live' value which starts to be available after all cell values have been polled. LeafSpy is using these values this way.


Very interesting! I've ...

Now, mostly happy with what the LBC does. Only, when I charge SoC doesn't increase. It will increase later as I drive but thats too much delay.
So I'm wondering, when charging do I need to pull Pin 5 AND 6 to 12V or just pin 5? Currently doing the latter.


In my car I'm pulling both pins to 12V ...

If you need to replace the connectors, you can use this series of connectors from TE connectivity (some examples):
https://www.digikey.com/product-detail/en/te-connectivity-amp-connectors/1318386-1/A106550-ND/2273493
https://www.digikey.com/product-detail/en/te-connectivity-amp-connectors/1318747-1 ...

johu wrote: ↑Fri Jan 17, 2020 4:40 pm I realized the old BMS had 4 current sensors, the new one has only 3. I'm lacking one. Could that be the problem? What kind of sensors are they? Maybe I can just put in a constant resistor

Are you referring to the temperature sensors? If so, they should be 4kohm nominal NTC thermistors.

One method I used to verify that the BMS was hooked-up correctly was with a bluetooth dongle and the LeafSpy app. There's an option in the app to only perform BMS communications. Using the app, you can see all the output data from the BMS. Here are some details:
http://www.electricvehiclewiki.com ...

prensel wrote: ↑Wed Jan 01, 2020 7:07 pm

evcar wrote: ↑Tue Dec 31, 2019 6:32 am I've been running my 2013 Leaf BMS on a 48S battery pack for a few months now. So far it's been working well and reports all the cell voltages properly.

Did you parallel connect the BMS wires of the two banks of 48S ?

Correct, I did parallel the two banks.

I've been running my 2013 Leaf BMS on a 48S battery pack for a few months now. So far it's been working well and reports all the cell voltages properly.